Power-transmitting apparatus



May 27, 1930.

H. C. STEARNS POWER TRANSMITTING APPARATUS Filed July 2'7, 1927 mre/rfo/ Patented May Z 7, 19 3() f I 1 R i fiTnn sifiiennsgor,oiiigirnnx; irii moisQAssIGNoR To wnsrERn 1130;

TRIO COMPANY, on Yo an aY.,;A con1=onAtrIoN oF-NE' YORK rb m-kbmasm ArrAnA'QrUs This. Mai-On amass-eta tam 5.ment. l

I Q A w 1 power to the driven element;

gear being slidabl y mountedo n it's shaft-and ting apparatus, and mor 'e particularly to an overload clutchthroughwhich' poweristrans mittedfrom 'a drivingelement to a drivenele- The primary object of invention provide a simple, durable and 'efficie ntrpower transmission means'which is resp'onsive' to a pre determined load condition for quickly. and effectively discontinuing the trans'mi ssion of In accordance with 'oneemb I diment of this invention, the driving and driven elements of the'clut-ch comprisehelicalgears, the driven normally maintained in mesh with the driv f ing gear by a pivotalyoke'connectedto "one end of an off-center or toggle spring, the op posite end. of the spring being adjnstably 'mounted' for varying the forcejthereof inaccordancewith a. predetermined load to be.

transmitted. Fixed to the yoke isa clutch operating lever for manua'llylcausingthe .minedamount.

- a v 1 Other objects and advantages'ofthis inveny meshing or demeshing of the, gears, the demeshing "of the gears beingsimilar to that'occurringwhen the" loadv exceeds a .pre'deter:

tion will more fully appear from the. e ompanying'.descriptiontakenin connection with the accompanying drawing whichlillustrates one embodiment thereof, in which i Figl lis a; verticallongit 'dinal section-ofsan article arranging, apparatus" "actuatedby a, power trans'mitting' apparatus which includes v an overload clutch'gembodyingthe featultoiig'of the arrows; 4 1,

this invention? I V I Fig. 2 is an enlargedelevation ofthe'clutch as viewedon the line thereof looking in thedirection indicated byctas new snd ,F g 3 is a i k l on t ine 3- of Fig. 2 looking in :iindicatedl by,

. One embodiment Tol v (ilescribed asapplie to the idriving'lofan 31 parameter arranging articlesjsuch asfisfde scribed and claimedgiir applicants"..copending appl ca i n; iNo. 9 ,28 le F r ary 1926 to; which reference m naret a 1927] saa1' m. 28;797. I v Y e morecomplete illustration and;descriptionflof the arranging apparatus.

Referring now to the drawing wherein sini-y i I V ilar reference characters denote similar parts.

throughout the/various views a rotatablefrom janysuitable source of driving power for instance an .el'ectric motor (not; shown),

hassecur'ed to rotate therewith by a'set scre-w 11 (Fig. 3) a'helicalgear12 Meshing with thegear 12 when the hereinbefore mentioned j apparatus for arrangingarticles is inopera r tion which apparatus is indicated generally]- by the numeral 13 (Fig. 1), is a companion helical gear 14 slidably mounted on an angularly, disposed shaftl7 as viewed in Fig; 1;

by means of a key andkeyway 18"(Figs. 2 I

and .The' shaft .17. extends upwardly through an aperture provided'in a base 19 for f supporting the article arranging apparatus" 13 and is connected by a universal joint 20to i an extendedfsliaft portion- 21 of one of the screw mechanisms 22'oftheapparatus 13, one" of ch-is illustrated. Fixed'to'the undr: in

surface of the base 19 is a'depending U-shaped "bracket 25'between a pair of arms of whioh'is pivotedfabifurcated portion 26 0f ayoke p e member 27 by means of shoulderedscrews 28. f 5 1 JReferrin gparticularly to'Figs; 2 and Sthe yoke member 27 isprovided at its left so f bifurcatedupper and lower members 29 upo'n I each ofthe furcations of which is mounted a machinedupper and lower surfaces, of the,

gear Mat diametrically oppositepoints there;

frotatableroller 32, a pair of whichi'enga'gea I 'of. f Tocthe lowerportion ofjthe yokeniember".

27 intermediate thepivot point anclthe rollers; Q 32, is a hand operated lever 33 whichasjj I viewed in'Fig. 1 extends slightly outsideofl Ice 1 the leftside ofthe base 19 within-feasyreach of anoperator. The'leyer 33*is used to mann i driving shaft 10, whichmayreceive power a. '7

the driven gear to move inresponse to the end thrust thereon to permit adisengage ment of the teeth a rotatable shaft for the driven gear, the driven gear being keyed to the shaft for movement in a longitudinal direction thereom'and a toggle mechanism.

' having an elastic linl -operatively connected to the driven gear and arranged "formant tainging the "gears in driving engagement whena normal load s-bemg transmittedsbutfi yielding when thefload exceeds -a. prede termined amount to cause the" driven gear to move upon its shaft and outofmesh with the driving gear. 7 5; A; power transmittingapparatus-com:g prising a driving and adriven m'emberh'av- 7 ing cooperatingsurfaces arranged for per mitting the driven member .to move inre- I direction-of its end thrust top ermit a disensponsevto the end thrust thereo'n'jto permit a disengagement of the surfaces,=a n elastic tog 'gle linko'peratively connected tothedriven I v member and I arranged for 'maintaining' the means mounted to operativelyengage op po site surfaces of the driven member, an elastic togglelink connected at one end to the pivotal means at one side of the'pivotal point thereof for maintaining the surfaces in drivingflen gagement when a normal load isbeing trans mitted but yielding when the load exceeds a predetermined amount to permit a disen-Qw 7' gagement ofthe surfaces, and a lever se-. f j

cured to the pivotal means and operable at will to causethe reengagement of the surfaces of the driving and driven members.

Inwitnesswhereof, I hereunto subscribe my name this 16th day of July, A. D. 1927;.

HARRY CARPENTER STEARNS;

surfacesin driving engagement when a norprising a driving and 'a' driven' member having cooperatlng surfacesarranged for permitting the driven memberfto mo ve in response to the end thrust thereon to permit a disengagement of the surfaces,jpivotal means.

mounted to'engage opposite portions of. the

driven member, an elastic toggle link connected to thepivotal means and arranged for maintaining the surfaces in driving engagement when a normal load is being transits mitted but yielding when afload exceeds a;

predetermined amount to cause a'complete disengagement of the surfaces,'andfa member 7 fixed to the pivotal means for manually 'controlling the engagement andd1sengagement of the surfaces independent of the elastic V toggle link. 1 7

{7. A power transmitting apparatus com-- prising a'drivmg and a drivenshaft, hellcal gears carried thereon, one ofthe gears arranged for movement upon it s ,shaft in the gagement of the gears," and m'eansfor main-- ,taining the movable gear in mesh with the other gear to counteract the normalend thrust thereonbut responsive whenfthe load V prising a driving and'adriven member havmg cooperatmg surfacesarranged for per-.

exceeds a predetermined amount to cause a disengagement ofthe gears;

8. Apowerftransmitting apparatus com-' mitting the driven member to "move in re{ sponse to the'end thrust thereonjto permit a disengagement of the surfaces; a pivotal 

